If you previously had TPControl installed on the device, or you are logged into an AppleID that has previously downloaded it, go to the "Purchased" tab of the App Store application and you should find TPControl available to download.

If you use a different store to download your apps, then replace the "us" in theurlwith your region e.g Australia = "au", Singapore="sg" etc. To find the relevant abbreviation, go tohttps://www.apple.com/choose-your-country/